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Traffic generation for benchmarking data centre networks Opt. Switch. Netw. (IF 2.786) Pub Date : 2022-06-18 Christopher W.F. Parsonson, Joshua L. Benjamin, Georgios Zervas
Benchmarking is commonly used in research fields such as computer architecture design and machine learning as a powerful paradigm for rigorously assessing, comparing, and developing novel technologies. However, the data centre network (DCN) community lacks a standard open-access and reproducible traffic generation framework for benchmark workload generation. Driving factors behind this include the
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Routing and spectrum assignment employing long short-term memory technique for elastic optical networks Opt. Switch. Netw. (IF 2.786) Pub Date : 2022-06-01 Lina Cheng, Yang Qiu
With the prevalence of some high bandwidth-demanding applications, such as cloud computing, traditional wavelength-division-multiplexing passive optical networks have difficulties in satisfying such growing bandwidth demands due to its limited allocation-flexibility and utilization-efficiency. Therefore, elastic optical networks (EONs). In order to realize the flexibility in EONs, sophisticated routing
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Performance and challenges of Bi-directional resource allocation in multi-core space division multiplexing elastic optical networks Opt. Switch. Netw. (IF 2.786) Pub Date : 2022-06-02 Abdul Wadud, Anas Basalamah
In space division multiplexing-elastic optical networks (SDM-EONs), crosstalk and fragmentation are the significant factors determining overall resource utilization. Crosstalk and fragmentation management spectral resource allocation schemes can enhance the overall resource utilization in SDM-EONs. This paper proposes three crosstalk and fragmentation management bi-directional resource allocation schemes
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“RNDM 2019 selected papers” special issue Opt. Switch. Netw. (IF 2.786) Pub Date : 2022-05-26 G. Ellinas, T. Panayiotou
Abstract not available
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A dual-hop topology-aware routing protocol for underwater optical wireless sensor networks Opt. Switch. Netw. (IF 2.786) Pub Date : 2022-05-23 Yinkang Dai, Jing Ji, Yang Qiu
Underwater optical wireless communication (UOWC) is an emerging technology for underwater wireless sensor networks (UWSNs). Compared with acoustic waves and radio frequency waves, optical waves can provide higher data rates and lower latency. However, given the limited transmission range and energy supply, as well as the existence of communication void regions in UOWC which may further deteriorate
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DROAD: Demand-aware reconfigurable optically-switched agile data center network Opt. Switch. Netw. (IF 2.786) Pub Date : 2022-05-26 Bartlomiej Siniarski, Dinh Danh Le, Conor McArdle, John Murphy, Liam Barry
We present a Demand-aware Reconfigurable Data Center Network architecture design (DROAD) with integrated fast-switching optics and space switches that allows dynamic reconfiguration and separation of intra- and inter-cluster connections. The performance analysis results show a 64% improvement in average Flow Completion Time and a significant reduction in TCP session time, as well as a reduced number
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QoS-aware hybrid cloudlet placement over joint fiber and wireless backhaul access network Opt. Switch. Netw. (IF 2.786) Pub Date : 2022-05-18 Chao He, Ruyan Wang, Dapeng Wu, Hong Zhang, Zefu Tan
Over the last decades, the emerging paradigms, e.g., centralized mobile cloud computing (MCC), multi-access edge computing (MEC), and collaborative computing offloading (CCO), have attracted extensive attention in adaptive 5G low latency communication for Tactile Internet. Besides, a novel integrated wireless optical transport network emerges in access networks and supports joint fronthaul and backhaul
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Editorial test of time Opt. Switch. Netw. (IF 2.786) Pub Date : 2022-05-16 Admela Jukan, Martin Reisslein, Andrea Bianco, George Rouskas
Abstract not available
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Software-defined optical intra-data center network and access control Strategy Opt. Switch. Netw. (IF 2.786) Pub Date : 2022-05-06 P.A. Baziana, G. Drainakis, E. Sykas
The continuously emerging cloud services provide an unprecedented traffic growth into the large-scale data centers (DCs) globally. In this paper, we introduce an optical DC network (DCN) architecture to organize the servers into computing clusters. Since a high percentage of the total DCΝ traffic is served within a cluster, we assume two distinct networks: the intra-cluster passive optical network
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Founding AP's IVM and related IHM for subway LiFi network Opt. Switch. Netw. (IF 2.786) Pub Date : 2022-04-29 Xiaoqi Wang, Chaoqin Gan, Shibao Wu, Yitong Chen, Yixin Chen
In this paper, the information value model (IVM) of an access point (AP) and the related intelligent handover model (IHM) are firstly founded in the subway light-fidelity (LiFi) network. At first, based on statistical methods, the IVM is created by analyzing the behavioral characteristics of subway passengers. By the IVM, the probability of user access to each AP can be successfully predicted. Next
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Neural network-assisted decision-making for adaptive routing strategy in optical datacenter networks Opt. Switch. Netw. (IF 2.786) Pub Date : 2022-04-21 Yuanyuan Hong, Xuezhi Hong, Jiajia Chen
To improve the blocking probability (BP) performance and enhance the resource utilization, a correct decision of routing strategy which is most adaptable to the network configuration and traffic dynamics is essential for adaptive routing in optical datacenter networks (DCNs). A neural network (NN)-assisted decision-making scheme is proposed to find the optimal routing strategy in optical DCNs by predicting
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ILP models and improved methods for the problem of routing and spectrum allocation Opt. Switch. Netw. (IF 2.786) Pub Date : 2022-03-07 Jiading Wang, Maiko Shigeno, Qian Wu
Elastic Optical Networks (EONs) using a flexible wavelength allocation technique with smaller granularity of spectrum can improve the efficiency and flexibility for diverse traffic transmission. However, due to the small granularity in EONs, the resource allocation problems become more complicated than that of the existing network architecture. By classifying the integer linear programming (ILP) models
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A Novel Dynamic Bandwidth Allocation Scheme for XGPON based Mobile Fronthaul for Small Cell CRAN Opt. Switch. Netw. (IF 2.786) Pub Date : 2022-02-08 Garima, Vivekanand Jha, Rakesh Kumar Singh
Time division multiplexing passive optical networks (TDM-PON) have emerged as a promising technology for mobile fronthaul for small cell CRAN. The performance of such TDM-based PON mobile fronthaul for small cell CRAN greatly depends on efficient dynamic bandwidth allocation (DBA) mechanisms. In this paper, a novel DBA mechanism based on the concept of dynamic service interval for ITU-based TDM-PON
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Spectrum slicing-based fragmentation aware routing and spectrum allocation in elastic optical networks Opt. Switch. Netw. (IF 2.786) Pub Date : 2022-01-31 Huanlin Liu, Jie Ren, Yong Chen, Junling Hu, Chang Tang, Mingming Tang
For addressing the problems of high bandwidth blocking probability and low spectrum utilization caused by spectrum fragmentation in elastic optical networks (EONs), a dynamic EONs node architecture for deploying spectrum slicer is studied to transmit the request in the paper. The spectrum slicer can relax spectrum contiguity and improve spectrum fragmentation utilization for request's lightpath establishing
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Nonblocking conditions for a multicast WSW architecture based on subtree scheme for elastic optical networks Opt. Switch. Netw. (IF 2.786) Pub Date : 2021-12-01 Bey-Chi Lin
Elastic optical networks (EONs) are a promising solution for future high-speed optical communication, and multicasting in EONs can efficiently support many emerging services. Different schemes, such as path, tree and subtree schemes, serve multicast services. In this paper, we consider a three-stage wavelength-space-wavelength (WSW) node architecture, which adopts wavelength switches in the first and
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Why Optical Packet Switching failed and can Elastic Optical Networks take its place? Opt. Switch. Netw. (IF 2.786) Pub Date : 2021-12-22 Franco Callegati, Davide Careglio, Luiz Henrique Bonani, Mario Pickavet, Josep Solé-Pareta
In this special issue devoted to the memory of Prof. Fabio Neri we would like to look back at the time of the international research projects where some of us collaborated with him. On the basis of our personal experience of the time and the current viewpoint, we will discuss why Optical Packet Switching (OPS) is a technology that never came to market in spite of the great amount of research that was
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Performance of resource delayed release strategy in software-defined OTN over WDM networks for uniform and non-uniform traffic Opt. Switch. Netw. (IF 2.786) Pub Date : 2021-12-17 Shideh Yavary Mehr, Byrav Ramamurthy, Yu Zhou, Bingli Guo, Shanguo Huang
In today's wide area networks, especially in Optical Transport Networks (OTN) with Software Defined Networking (SDN) features enabled over Wavelength Division Multiplexing (WDM), Bandwidth on Demand (BoD) is an important service that can be satisfied by dynamic end-to-end service provisioning. Service provisioning time (SPT) and Blocking Probability (BP) are critical performance metrics for the users
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Circuits/cutsets duality and theoretical foundation of a structural approach to survivable logical topology mapping in IP-over-WDM optical networks Opt. Switch. Netw. (IF 2.786) Pub Date : 2021-12-02 Krishnaiyan Thulasiraman, Tachun Lin, Muhammad Javed, Guoliang Xue, Zhili Zhou
The survivable logical topology mapping (SLTM) problem in IP-over-WDM networks is to map each link in the logical topology (IP layer) onto a lightpath in the physical topology (optical layer) such that a failure of a physical link does not cause the logical topology to become disconnected. This problem is known to be NP-complete. For this SLTM problem, two lines of investigations have been reported
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Optical networks management and control: A review and recent challenges Opt. Switch. Netw. (IF 2.786) Pub Date : 2021-11-25 Nicola Andriolli, Alessio Giorgetti, Piero Castoldi, Gabriele Cecchetti, Isabella Cerutti, Nicola Sambo, Andrea Sgambelluri, Luca Valcarenghi, Filippo Cugini, Barbara Martini, Francesco Paolucci
In the last twenty years, optical networks have witnessed recurrent changes in their management and control architecture. In this paper, we present a historical timeline and a future perspective of the evolution of optical network management and control deployed for Wavelength Switched Optical Networks (WSON), Elastic Optical Networks (EON) and (multilayer) Data Center Networks. Early implementations
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Optical network design and analysis tools: A test of time Opt. Switch. Netw. (IF 2.786) Pub Date : 2021-11-11 Miquel Garrich Alabarce, Pablo Pavón Mariño
Telecom operators' infrastructure is sustained by optical communication networks that provide the means for exchanging large amounts of information, which is essential for many modern society needs. Optical networks are characterized by rapid breakthroughs in a variety of technologies. Relevantly, the last decade encompassed remarkable advances in optical networks’ subfields of signal processing, electronics
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Low-margin efficient power and spectrum assignment in elastic optical networks Opt. Switch. Netw. (IF 2.786) Pub Date : 2021-10-07 Layhon Roberto Rodrigues dos Santos, Taufik Abrão
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Efficient dynamic routing in Spectrally-Spatially Flexible Optical Networks based on traffic categorization and supervised learning methods Opt. Switch. Netw. (IF 2.786) Pub Date : 2021-11-03 Róża Goścień, Paweł Ksieniewicz
In this paper, we focus on the efficient dynamic routing in Spectrally-Spatially Flexible Optical Networks (ss-fon) realized using Single-Mode Fiber Bundles (smfbs). We study two scenarios – unprotected network (np) and network protected by dedicated path protection (dpp) against a single link failure. For these configurations, we propose a dedicated optimization approach (Enhanced Adaptive Spectral-Spatial
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Network-state-dependent routing and route-dependent spectrum assignment for PRMLSA problem in all-optical elastic networks Opt. Switch. Netw. (IF 2.786) Pub Date : 2021-10-04 V.A.C. Vale, R.C. Almeida, K.D.R. Assis
The advent of Elastic Optical Networks (EON) has led to significant improvements in optical network spectrum utilization when compared to Wavelength Division Multiplexing Optical Networks. However, the EON brought challenges to be explored, notably the Power, Routing, Modulation Level and Spectrum Assignment (PRMLSA) problem. This article aims to explore techniques for the PRMLSA problem, being developed
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Crosstalk-aware routing, spectrum, and core assignment based on AoD nodes in SDM-EONs with bidirectional multicore fibers Opt. Switch. Netw. (IF 2.786) Pub Date : 2021-09-16 Shan Yin, Yidong Chen, Sicong Ding, Zhidong Zhang, Shanguo Huang
Inter-core crosstalk causes severe signal impairment in Space Division Multiplexing Elastic Optical Networks (SDM-EON) with multi-core fibre (MCF). In order to mitigate the influence of crosstalk between cores, bidirectional MCF is used. SDM-EON has dramatically increased the network bandwidth and is the mainstream trend of future communications, but the overall cost of such an SDM-EON will increase
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Novel evolutionary planning technique for flexible-grid transmission in optical networks Opt. Switch. Netw. (IF 2.786) Pub Date : 2021-09-22 Matheus R. Sena, Pedro J. Freire, Leonardo D. Coelho, Alex F. Santos, Antonio Napoli, Raul C. Almeida
This paper proposes a novel joint resource allocation technique for flexible-grid systems by utilizing non-dominant sort genetic algorithm (NSGA-II) in a multi-objective optimization framework. It pioneers the implementation of an evolutionary mechanism to optimize resources as means of mitigation of physical layer impairments. This investigation initially introduces a proposal in which bandwidth reduction
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Dynamic Bandwidth allocation algorithm for avoiding Frame rearrangement in NG-EPON Opt. Switch. Netw. (IF 2.786) Pub Date : 2021-09-07 Ammar Rafiq, Muhammad Faisal Hayat, Muhammad Usman Younus
Next Generation Ethernet Passive Optical Network (NG-EPON) is considered to be future prospective access technology that could help to achieve 100Gbps data rates. Wavelength bonding is a phenomenon that can help Optical Network Units (ONU) to enhance their transmission capabilities. Using wavelength bonding, an ONU could transmit on multiple wavelength channels in parallel. The ONUs can achieve data
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Channel power optimization in WDM systems using co-evolutionary genetic algorithm Opt. Switch. Netw. (IF 2.786) Pub Date : 2021-08-09 Masoud Vejdannik, Ali Sadr
In this work, we present a co-evolutionary genetic (CEGA) algorithm to adapt the optical launch powers and optimize the signal-to-noise ratio (SNR) values based on maximizing the minimum SNR margin. The introduced co-evolutionary algorithm provides lower computational complexity rather than convex optimization and linear programming techniques, applicable for both static and time-critical dynamic networking
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A deep neural network with a fuzzy multi-objective optimization model for fault analysis in an elastic optical network Opt. Switch. Netw. (IF 2.786) Pub Date : 2021-08-17 André Luiz Ferraz Lourenço, Amílcar Careli César
The elastic optical network (EON) is the most attractive architecture for the next generation of optical networks. Dealing with high bit-rate traffic, EON faces the challenge of ensuring survivability to operate with stringent Service Level Agreements. This article proposes a Deep Neural Network model with a multi-objective Fuzzy Inference System (FIS) to solve the Routing and Spectrum Assignment problem
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A novel channel-based model for the problem of routing, space, and spectrum assignment Opt. Switch. Netw. (IF 2.786) Pub Date : 2021-08-04 Qian Wu, Jiading Wang, Maiko Shigeno
Space-division multiplexing (SDM) is regarded as one of the most promising technologies to satisfy the explosively growing internet traffic. Elastic optical networks with SDM is one of the newest network architectures for network planning in the future. However, the resource allocation problem in these networks becomes more complicated due to the expansion of spatial dimensions. In this paper, we propose
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Cascading-failure-resilient interconnection for interdependent power grid - Optical network Opt. Switch. Netw. (IF 2.786) Pub Date : 2021-07-13 M. Farhan Habib, Francesco Musumeci, Massimo Tornatore, Biswanath Mukherjee
The interdependence between communication networks, e.g., an optical backbone network, and power grids is a critical issue to take into account when designing and operating both systems. In fact, failures in one network may cause further failures in the other network and vice versa. This is because nodes in power grids (i.e., power generators, loads or interchange nodes) are controlled and managed
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Crafting optimal and resilient iBGP-IP/MPLS overlays for transit backbone networks Opt. Switch. Netw. (IF 2.786) Pub Date : 2021-07-13 Cristina Mayr, Claudio Risso, Eduardo Grampín
The Internet is a collection of interconnected Autonomous Systems (ASes) that use the Border Gateway Protocol (BGP) to exchange reachability information. In this regard, BGP stability and scalability in the inter-domain scope have been matters of major concern for many years, and network engineers have been applying several techniques to cope with these issues. BGP is also used intra-domain (internal
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RMSA algorithms resilient to multiple node failures in dynamic EONs Opt. Switch. Netw. (IF 2.786) Pub Date : 2021-07-21 Fábio Barbosa, Amaro de Sousa, Agostinho Agra, Krzysztof Walkowiak, Róża Goścień
In Elastic Optical Networks (EONs), the way different service demands are supported in the network is ruled by the Routing, Modulation and Spectrum Assignment (RMSA) algorithm, which decides how the spectrum resources of the optical network are assigned to each service demand. In a dynamic EON, demand requests arrive randomly one at a time and the accepted demands last in the network for a random time
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Joint optimization of primary and backup controller placement and availability link upgrade in SDN networks Opt. Switch. Netw. (IF 2.786) Pub Date : 2021-07-08 Dorabella Santos, Teresa Gomes
In Software-Defined Networking (SDN), the control and data planes are decoupled, leading to a more programmable and efficient network management. In this paper, the controller placement problem in SDN is addressed, jointly with the problem of exploring a high-availability tree subgraph, in order to support delay and availability requirements between the switches and the controllers. We consider that
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On survivable energy-efficient and crosstalk-aware routing, spectrum and core allocation schemes for dynamic multiclass traffic in SDM-EONs Opt. Switch. Netw. (IF 2.786) Pub Date : 2021-06-09 Smita Paira, Monish Chatterjee, Uma Bhattacharya
In this paper, we propose the design of a survivable energy-efficient and crosstalk-aware routing, spectrum, and core allocation (RSCA) scheme for online multiclass traffic in both spectral and temporal domains in SDM-EON. Multipath based protection scheme is applied to ensure survivability against single link failure. Advanced reservation (AR) connections being a part of multiclass traffic may withstand
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Experimental validation of an SDN residential network management proposal over a GPON testbed Opt. Switch. Netw. (IF 2.786) Pub Date : 2021-05-29 Noemi Merayo, David de Pintos, Juan C. Aguado, Ignacio de Miguel, Ramón J. Durán, Patricia Fernández, Rubén M. Lorenzo, Evaristo J. Abril
We propose, and experimentally demonstrate, an SDN (Software Defined Networking) new management solution for legacy GPONs (Gigabit Passive Optical Networks), which allows users to dynamically control their residential networks by means of a management application. In this way, users can customize the allocation of resources (and set constraints, if desired) to connected devices in their residential
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Optimizing FSO networks resilient to adverse weather conditions by means of enhanced uncertainty sets Opt. Switch. Netw. (IF 2.786) Pub Date : 2021-05-19 Ilya Kalesnikau, Marinela Shehaj, Dritan Nace, Michał Pióro
This work deals with dimensioning of wireless mesh networks (WMN) composed of FSO (free space optics) links. Although FSO links realize broadband transmission at low cost, their drawback is sensitivity to adverse weather conditions causing transmission degradation on multiple links. Hence, designing such FSO networks requires an optimization model to find the cheapest configuration of link capacities
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Improving efficiency of network resources in elastic optical transport network by using in-network cache functions Opt. Switch. Netw. (IF 2.786) Pub Date : 2021-05-13 Takashi Miyamura, Akira Misawa
We developed a network architecture called information-centric elastic optical transport network (i-CEON) that enables efficient content delivery. Increasing the volume of video traffic consumes network resources, so it is necessary to establish optical transport network architectures suitable for content delivery. For this purpose, we extend existing information-centric networking to be applicable
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Confidentiality meets protection in elastic optical networks Opt. Switch. Netw. (IF 2.786) Pub Date : 2021-03-09 G. Savva, K. Manousakis, G. Ellinas
This work considers the joint problem of securing confidential demands against eavesdropping attacks and protecting the network against link failures in elastic optical networks (EONs). Network coding is used to provide security for confidential connections by encrypting the data through XOR operations at the physical layer with other established connections in the network. Backup paths are also computed
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Optimization algorithms for the proactive configuration of elastic optical networks under jamming attacks and demand uncertainty Opt. Switch. Netw. (IF 2.786) Pub Date : 2021-03-10 K. Manousakis, T. Panayiotou, P. Kolios, I. Tomkos, G. Ellinas
This work presents optimization algorithms on attack-aware routing and spectrum allocation (Aa-RSA) in conjunction with spectrum selective switch (SSS) placement, taking into account variations in traffic demands. The objectives of the algorithms are to minimize the required number of SSSs, as well as the number of lightpath re-allocations between different demand scenarios, taking into account the
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Topological approach to measure the recoverability of optical networks Opt. Switch. Netw. (IF 2.786) Pub Date : 2021-04-01 Peng Sun, Zhidong He, Robert E. Kooij, Piet Van Mieghem
Optical networks are vulnerable to failures due to targeted attacks or large-scale disasters. The recoverability of optical networks refers to the ability of an optical network to return to a desired performance level after suffering topological perturbations such as link failures. This paper proposes a general topological approach and recoverability indicators to measure the network recoverability
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A Survey of Reconfigurable Optical Networks Opt. Switch. Netw. (IF 2.786) Pub Date : 2021-03-29 Matthew Nance Hall, Klaus-Tycho Foerster, Stefan Schmid, Ramakrishnan Durairajan
Reconfigurable optical networks have emerged as a promising technology to efficiently serve the fast-growing traffic produced by the digital society. This paper provides a survey of the field. We first review enabling optical hardware technologies in general and then consider technologies that are specific to data center networks and wide-area networks in more detail. We further provide an overview
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Security and privacy-awareness in a software-defined fog computing network for the Internet of Things Opt. Switch. Netw. (IF 2.786) Pub Date : 2021-03-22 Abdulrahman Alamer
Issues of high energy costs and a time delay factor currently pose a considerable challenge to the success of the Internet of Things (IoT). Accordingly, fog computing (fog-C) has been introduced as a new paradigm to address both the high bandwidth cost and time delay issues that can result from transmitting sensing data all the way to centralized cloud servers. In addition, the optical fog-C network
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Disaster resilience of optical networks: State of the art, challenges, and opportunities Opt. Switch. Netw. (IF 2.786) Pub Date : 2021-03-26 Jacek Rak, Rita Girão-Silva, Teresa Gomes, Georgios Ellinas, Burak Kantarci, Massimo Tornatore
For several decades, optical networks, due to their high capacity and long-distance transmission range, have been used as the major communication technology to serve network traffic, especially in the core and metro segments of communication networks. Unfortunately, our society has often experienced how the correct functioning of these critical infrastructures can be substantially hindered by massive
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Ethernet fronthaul transport of an upper-physical layer functional split using time-aware shaping Opt. Switch. Netw. (IF 2.786) Pub Date : 2021-01-08 Mohamad Kenan Al-Hares, Philippos Assimakopoulos, Nathan J. Gomes
An Upper Physical layer functional Split (UPS) for an Ethernet fronthaul network is modelled, and the frame delay and Frame Delay Variation (FDV) limitations are investigated. The results show that contention in Ethernet switch ports can cause an increase in the delay and FDV beyond proposed specifications for the UPS and other time-sensitive traffic types such as I/Q-type traffic. Time Aware Shaping
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Multi-path provisioning in elastic optical network with dynamic on-request optimal defragmentation strategy Opt. Switch. Netw. (IF 2.786) Pub Date : 2021-01-23 Ujjwal, Jaisingh Thangaraj, Rajnish kumar
Elastic Optical Networks (EONs) are extensively accepted promising solution for future ultra-high-speed optical transmission, due to their capability of efficient and flexible assignment of immense optical bandwidth to the heterogeneous traffic demand. However, it undergoes through an aggravated form of the spectrum fragmentation problem due to the heterogeneous bandwidth requirements, spectrum continuity
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Static routing and spectrum allocation method for design of low-power elastic optical networks with multifiber environments Opt. Switch. Netw. (IF 2.786) Pub Date : 2021-01-21 Takanori Kudo, Tomotaka Kimura, Yutaka Fukuchi, Kouji Hirata
This paper proposes a static Routing and Spectrum Allocation (RSA) method to design low-power elastic optical networks. In the elastic optical networks, data are transmitted via lightpaths, which are routes flexibly assigned frequency resources according to transmission distances and traffic demands. When designing the elastic optical networks with a static lightpath establishment policy, lightpaths
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Performance optimization of OADM based DP-QPSK DWDM optical network with 37.5 GHz channel spacing Opt. Switch. Netw. (IF 2.786) Pub Date : 2021-01-09 Neeraj Sharma, Sunil Agrawal, Vinod Kapoor
Advanced modulation formats like dual-polarization quadrature phase-shift keying (DP-QPSK) along with the digital coherent receiver are enabling optical networks to provide high spectral efficiency (SE) over long-haul transmission reach. The DP-QPSK based dense wavelength division multiplexing (DWDM) system with 37.5 GHz channel spacing can provide extra throughput of 33% compared to 50 GHz channel
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Adaptive chaotic hurricane-aided efficient power assignment for elastic optical networks Opt. Switch. Netw. (IF 2.786) Pub Date : 2020-11-02 Layhon R.R. dos Santos, Taufik Abrão
The proposed adaptive power control based on the chaotic hurricane search optimization (A-CHSO) for elastic optical networks (EON)s dynamically and efficiently adjusts the power increasing (r0) parameter taking into account the quality of transmission (QoT), which is measured by the optical performance monitors (OPM)s. For sake of comparison, three alternative power assignment methods are analyzed
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Optical link monitoring in fibre-to-the-x passive optical network (FTTx PON): A comprehensive survey Opt. Switch. Netw. (IF 2.786) Pub Date : 2020-10-24 Auwalu Usman, Nadiatulhuda Zulkifli, Mohd Rashidi Salim, Kharina Khairi, Asrul Izam Azmi
As optical fibre reaches deeper into passive optical network (PON) in fibre-to-the-x (FTTx) networks, maintaining the integrity of these networks is indeed imperative. Essentially, best practices have been established throughout the installation and verification of the fibre access network. Equally significant is monitoring the optical fibre performance degradation in-service to ascertain efficient
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The flexible resource management in optical data center networks based on machine learning and SDON Opt. Switch. Netw. (IF 2.786) Pub Date : 2020-10-27 Congying Zhi, Wei Ji, Rui Yin, Jinku Feng, Hongji Xu, Zheng Li, Yannan Wang
Based on software defined optical network and machine learning, the flexible resource management mechanism (ML-FRM) is proposed, which meets the resource requirements of different services in the optical data center networks. The machine learning is integrated to the SDON controller, which accomplishes the resource allocation algorithms according to the classification and clustering results. ML-FRM
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A Bibliometric Analysis and Visualization of Passive Optical Network Research in the Last Decade Opt. Switch. Netw. (IF 2.786) Pub Date : 2020-08-10 Kamran Ali Memon, Rizwan Aslam Butt, Khalid Hussain Mohammadani, Bhagwan Das, Sibghat Ullah, Saleemullah Memon, Noor ul Ain
Passive optical networks (PONs) are the most successful broadband access solutions for its wide bandwidth, low-cost deployment worldwide, and maintenance. In the last decade, the diverse and prevalent research related to PONs sustains 330+ science citation index (SCI) articles per year, with 9.18 average citations per article, making it "big literature data". This article, for the first time, presents
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Elastic optical network with spectrum slicing for fragmented bandwidth allocation Opt. Switch. Netw. (IF 2.786) Pub Date : 2020-08-02 Nattapong Kitsuwan, Praphan Pavarangkoon, Avishek Nag
Elastic Optical Networks (EONs) allow the channel spacing and the spectral width of an optical signal to be dynamically adjusted and hence have become an important paradigm in managing the heterogeneous bandwidth demands of optical backbone networks. The entire available optical spectrum is divided into some spectrum slots which define the smallest granularity of bandwidth and optical signals with
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Applying cognitive dynamic learning strategies for margins reduction in operational optical networks Opt. Switch. Netw. (IF 2.786) Pub Date : 2020-07-29 Luis David Notivol Calleja, Salvatore Spadaro, Jordi Perelló, Gabriel Junyent
Today's optical transport networks are complex already and the support of the new arising services will further increase such complexity. Traditional deterministic network procedures will need to be revisited, especially their operations. Network Operators will require more dynamic approaches to get the best out of their infrastructure. In this context, cognition and machine learning techniques can
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A survey on challenges of Spatial Division Multiplexing enabled elastic optical networks Opt. Switch. Netw. (IF 2.786) Pub Date : 2020-07-22 Ítalo Brasileiro, Lucas Costa, André Drummond
Elastic Optical Networks (EON) emerge as a viable solution to support the current growing demand for bandwidth. With the application of multi-core fibers (MCF) in EON links, it is possible to increase the availability of spectral resources and explore the spatial dimension. An EON network with MCF enables Space-Division Multiplexing (SDM), allowing the use of more resources in fibers and increasing
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An automated negotiation framework for application-aware transport network services Opt. Switch. Netw. (IF 2.786) Pub Date : 2020-05-25 Antonio Marsico, Marco Savi, Domenico Siracusa, Elio Salvadori
Application-centric networking proposes a novel approach to provision connectivity services in transport networks based on application-specific requirements. By exploiting this paradigm, an application can request a service with several requirements to a generic control and management plane, which can leverage this information to differentiate a service on the overall network layers. However, an application-centric
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Comparison of switching policies in terms of switching cost and network performance in static SDM-EONs Opt. Switch. Netw. (IF 2.786) Pub Date : 2020-05-21 Mingcong Yang, Chenxiao Zhang, Qian Wu, Weichang Zheng, Yongbing Zhang
In this paper, we concentrate on the comparison of different switching policies, as well as their corresponding spatially-spectrally flexible super-channel transmission technologies, in static SDM-EONs. These switching policies are different due to their different spatial switching granularities and/or whether the space lane change (SLC) is supported. According to our simulation results, the switching
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A performance study of dynamic routing algorithm for SDM translucent optical networks with assistive storage Opt. Switch. Netw. (IF 2.786) Pub Date : 2020-05-16 Wojciech Kmiecik, Krzysztof Walkowiak
In this paper, we focus on dynamic lightpath provisioning in translucent spectrally spatially flexible optical networks (SS-FONs) created with a combination of both spectral (EON) and spatial (SDM) flexibility. We utilize the distance-adaptive transmission (DAT) in order to select a modulation for request and routing path in a flexible manner. Moreover, we assume that the signal regeneration is realized
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Underwater optical wireless communication-based IoUT networks: MAC performance analysis and improvement Opt. Switch. Netw. (IF 2.786) Pub Date : 2020-04-28 Chuyen T. Nguyen, Mat T. Nguyen, Vuong V. Mai
Underwater Optical Wireless Communication (UOWC) is a high-speed data transmission technology promising to support the concept of the Internet of Underwater Things (IoUT). The performance of UOWC-based IoUT networks, especially medium access control (MAC), could be affected significantly by physical factors in the underwater environment. However, there is a lack of studies on the MAC performance analysis
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Optimizing energy and spectrum efficiency of virtual optical network embedding in elastic optical networks Opt. Switch. Netw. (IF 2.786) Pub Date : 2020-03-02 Wenting Wei, Huaxi Gu, Achille Pattavina, Jiru Wang, Yi Zeng
Elastic optical network has recently been deemed as a promising infrastructure to support the ever-increasing bandwidth demand of emerging applications, due to its high transmission rate, fine-grained and flexible spectrum allocation. With the explosive growth of traffic, optimizing energy and spectrum efficiency has become a critical issue for green elastic optical networks, which is closely related